Designed as a direct replacement for the OEM valve which is prone to failure when the engine has been tuned or had an upgrade to the engine management software. This valve is complete and ready to install with no fitting kit required.
This valve is supplied assembled with our “green” coded spring which is suitable for standard or mildly tuned engines, and also comes with an uprated 'yellow' coded spring.

In The Box:
1 x FMDVK04D Valve
1 x Forge Sticker
If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.